<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity {

    private $_id;
    /**
     * Authenticates a user.
     * The example implementation makes sure if the username and password
     * are both 'demo'.
     * In practical applications, this should be changed to authenticate
     * against some persistent user identity storage (e.g. database).
     * @return boolean whether authentication succeeds.
     */
    public function authenticate() {
        $user = User::model()->find('LOWER(username) = ?', array(strtolower($this->username)));
        if ($user === null)
            $this->errorCode = self::ERROR_USERNAME_INVALID;
        else if (md5($this->password) !== $user->password)
                $this->errorCode=self::ERROR_PASSWORD_INVALID;
            else {
                $this->_id = $user->id;
                $this->username = $user->username;
                $this->errorCode = self::ERROR_NONE;
            }
        return !$this->errorCode;
//        $users=array(
//            // username => password
//            'demo'=>'demo',
//            'admin'=>'admin',
//        );
//        $username = strtolower(trim($this->username));
//        $password = strtolower(trim($this->password));
//        if (!isset($users[$this->username])) {
//            $this->errorCode = self::ERROR_USERNAME_INVALID;
//        } else if ($users[$this->username] !== $this->password) {
//            $this->errorCode = self::ERROR_PASSWORD_INVALID;
//        } else {
//            $this->errorCode = self::ERROR_NONE;
//        }
//        return !$this->errorCode;
    }

    /**
     * @return integer the ID of the user record
     */
    public function getId() {
        return $this->_id;
    }
}